package com.konoha.controller;

import com.konoha.pojo.Result;
import com.konoha.pojo.User;
import com.konoha.service.UserService;
import com.konoha.utils.JwtUtil;
import com.konoha.utils.Md5Util;
import com.konoha.utils.ThreadLocalUtil;
import jakarta.annotation.Resource;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Validated
public class UserController {
    @Autowired
    private UserService userService;

    @Resource
    private StringRedisTemplate stringRedisTemplate;

    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$")String password){
        //参数校验
            //查询用户
            User u = userService.findByUsername(username);
            if (u==null){
                //没有占用
                //注册
                userService.register(username,password);
                return Result.success();
            }else{
                //占用
                return Result.error("用户名已被占用");
            }
        }

        @PostMapping("/login")
        public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$")String password){
            //根据用户名查询用户
            User loginUser = userService.findByUsername(username);
            //判断该用户是否存在
            if(loginUser==null){
                return Result.error("用户名不存在");
            }
            //判断密码是否正确 loginUser对象中的password是密文
            if (Md5Util.getMD5String(password).equals(loginUser.getPassword())){
                //登录成功
                Map<String,Object> clams = new HashMap<>();
                clams.put("id",loginUser.getId());
                clams.put("username",loginUser.getUsername());
                String token = JwtUtil.genToken(clams);
                //把token存储到redis中
                ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
                operations.set(token,token,1, TimeUnit.HOURS);
                return Result.success(token);
            }
            return Result.error("密码错误");
        }

        @GetMapping("/userInfo")
        public Result<User> userInfo(/*@RequestHeader(name = "Authorization") String token*/){
        //根据用户名查询用户
           /* Map<String, Object> map = JwtUtil.parseToken(token);
            String username = (String)map.get("username");*/
           Map<String,Object> map = ThreadLocalUtil.get();
            String username = (String) map.get("username");
            User user = userService.findByUsername(username);
            return Result.success(user);
        }

        @PutMapping("/update")
        public Result update(@RequestBody @Validated User user){
        userService.update(user);
        return Result.success();

        }

        @PatchMapping("/updateAvatar")
        public Result updateAvatar(@RequestParam @URL String avatarUrl){
            userService.updateAvatar(avatarUrl);
            return Result.success();
        }

        @PatchMapping("/updatePwd")
        public Result updatePwd(@RequestBody Map<String,String> params,@RequestHeader("Authorization") String token){
            //1.校验参数
            String old_pwd = params.get("old_pwd");
            String new_pwd = params.get("new_pwd");
            String re_pwd = params.get("re_pwd");
            if (!StringUtils.hasLength(old_pwd)||!StringUtils.hasLength(new_pwd)||!StringUtils.hasLength(re_pwd)){
                return Result.error("缺少必要的参数");
            }
            //校验原密码是否正确
            //调用userService根据用户名拿到原密码，再和old_pwd比对
            Map<String,Object> map = ThreadLocalUtil.get();
            String username = (String) map.get("username");
            User loginUser = userService.findByUsername(username);
           if ( !loginUser.getPassword().equals(Md5Util.getMD5String(old_pwd))){
               return Result.error("原密码填写不正确");
           }
           //newPwd和rePwd是否一样
            if (!new_pwd.equals(re_pwd)){
                return Result.error("两次填写的密码不一样");
            }
            //2.调用service完成密码更新
            userService.updatePwd(new_pwd);
            //删除redis中对应的token
            ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
            operations.getOperations().delete(token);
            return Result.success();
        }
}

